Why parents are not to get angry with their child

Many parents demand their parental right to get angry with their child, meaning "every parent gets angry with their children sometime". Yes, parents get angry, and it is sin nonetheless. To be clear, I do not get angry at children, as my pedophilia causes my case of autism to have the anger emotion missing for children. The most angry I can get with them is saying "no", meaning I get angry around the child. Most adults aren't like me, and get angry towards the child.

It says in Matthew 5:21-22 KJV: 

Ye have said that it was said of old time, Thou shalt not kill, and whosoever shall kill shall be in danger of the judgment: But I say unto you, that whosoever is angry with his brother without a cause shall be in danger of the judgment: and whosoever shall say to his brother, Raca, shall be in danger of the council: That whosoever shall say, thou fool, shall be in danger of hell fire.

 One might argue that "without a cause" means a disobedient child is a good reason to be angry. The reality is that anger should be based on righteous judgment, and children are exempt and indemnified under the Law. Matthew 5 is about summing up the Law, then taking it further or expanding on existing law. Under the Law, children could not be judged for any crime that they committed, with the parents being held responsible. Thus, there is no cause for any anger at children.

The flipside of this is shown in Colossians 3:20-21 KJV:

Children, obey your parents in all things, as is well-pleasing unto the Lord. Fathers, provoke not your children to anger, lest they become discouraged.

The Greek root word translated "obey" is υπακουο (Latin: hupakouo) and refers to secure, vulnerable rest prompted by the care and protection of children, leading to children being able to say anything to parents, being themselves, and having no fear of punishment or reprisal from parents, owing nothing in return to parents, but listening to parents nonetheless, out of gratitude and thanksgiving for having such kind, gentle parents. The Greek root word translated "provoke...to anger" is ερεθιζο (Latin: erethizo) and refers to the offenses in the Bible, with "provocation to anger" meaning harsh treatment of a child leading to rebellion in a child, in which the parent was seen as culpable under Jewish law, not the child.

Getting angry with children was discouraged, at best, under Christian law then, meaning fits of anger in general were illegal, including against children, as parenting then was attachment-based. Fits of anger towards children are to be restrained, meaning do the opposite of what you want to do to a child, rephrase your words in a more polite way. or else take a time-out. Parent anger is to be restrained, until it does not exist virtually, instead channeled to another mode of expression. Angry energy can be used to, perhaps, get things done around the house. When you aren't an angry parent, you won't have an angry child, and the child will then willfully submit to you.

The depraved and entitled parents who provoke children to anger will not inherit the Kingdom of God! Let them BURN!  Let them SUFFER forever and ever! Repent, for the Kingdom of Heaven is at hand!